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build: fix zlib compilation on Windows with MSVC

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Gate Z_HAVE_UNISTD_H behind a non-Windows check since unistd.h does
not exist on Windows. Add _CRT_SECURE_NO_DEPRECATE and
_CRT_NONSTDC_NO_DEPRECATE for MSVC to suppress deprecation errors
for standard C functions that zlib uses.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Alessandro De Blasis
2026-03-24 08:02:50 +01:00
parent d4a38c8661
commit 4df71bcad7
1 changed files with 9 additions and 1 deletions
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10
pkg/zlib/build.zig
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@@ -32,8 +32,16 @@ pub fn build(b: *std.Build) !void {
"-DHAVE_SYS_TYPES_H",
"-DHAVE_STDINT_H",
"-DHAVE_STDDEF_H",
"-DZ_HAVE_UNISTD_H",
});
if (target.result.os.tag != .windows) {
try flags.append(b.allocator, "-DZ_HAVE_UNISTD_H");
}
if (target.result.abi == .msvc) {
try flags.appendSlice(b.allocator, &.{
"-D_CRT_SECURE_NO_DEPRECATE",
"-D_CRT_NONSTDC_NO_DEPRECATE",
});
}
lib.addCSourceFiles(.{
.root = upstream.path(""),
.files = srcs,